Team captain Lleyton Hewitt still seems to think so, quickly shutting down talk of offering an olive branch to Tomic after Australia's 3-1 Davis Cup first round loss to Germany in Brisbane.

Australia have been relegated to September's World Group playoffs after world No.5 Alex Zverev sealed the tie for the underdog visitors with a straight sets thrashing of Nick Kyrgios at Pat Rafter Arena on Sunday.

It was a hammer blow to the hosts who had hoped to break a 15-year Cup drought after reaching the semi-finals last year and claiming their last three ties at home.

Before the Brisbane tie, Hewitt said he doubted whether Tomic would play Davis Cup again after the tennis bad boy claimed Australia could not win without him on Network Ten.

Former world No.17 Tomic - now No.168 - vowed to bounce back to his best on court after quitting reality TV show "I'm A Celebrity Get Me Out Of Here" after three nights, citing depression.

But it seems Tomic - who boasts an impressive 17-4 Cup record - won't be donning the green and gold any time soon despite Australia's upset loss to world No.14 Germany.

Hewitt said 28-time champions Australia had the depth to give the Cup "a good shake" in the next three to five years.

But asked if that meant reaching out to Tomic to join the group, Hewitt said: "Not right now, no."

With Tomic on the outer, Australia appear to have found a handy replacement in 18-year-old Alex de Minaur after his stunning debut in Brisbane.

Hewitt revealed world No.139 de Minaur braved an abdominal tear during his epic four-hour, five-set loss to Zverev in Friday's opening singles rubber.

World No.108 John Millman was set to replace de Minaur in Sunday's second reverse singles rubber but it was abandoned after Zverev sealed the result.

However, Kyrgios and No.74 Matthew Ebden are the only current Australian team members inside the top 100.

Germany have eight.

Still, Hewitt was confident about his team's future.

"We just have to pick ourselves up. But it's a close knit team - nothing is going to change that," Hewitt said.

"Next time we will fight to stay in the World Group which is the next goal.